Sex Reversal of Red Tilapia (Oreochromis sp.) by Larval Immersion using Aromatase Inhibitor
نویسندگان
چکیده
منابع مشابه
Brief exposure of embryos to steroids or aromatase inhibitor induces sex reversal in Nile tilapia (Oreochromis niloticus).
This study aimed to develop sex reversal procedures targeting the embryonic period as tools to study the early steps of sex differentiation in Nile tilapia with XX, XY, and YY sexual genotypes. XX eggs were exposed to masculinizing treatments with androgens (17α-methyltestosterone, 11-ketotestosterone) or aromatase inhibitor (Fadrozole), whereas XY and YY eggs were subjected to feminizing treat...
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In the present study, the efficacy of letrozole, a potent nonsteroidal aromatase inhibitor, and 17α-methyltestosterone on gondal sex differentiation and sex reversal was examined in Mozambique tilapia (Oreochromis mossambicus). Among the doses tried in the experiment, 100 mg letrozole, 200 mg letrozole, and 50 mg 17α-methyltestosterone/kg produced male dominated populations (97-100% males). The...
متن کاملAromatase plays a key role during normal and temperature-induced sex differentiation of tilapia Oreochromis niloticus.
In the tilapia Oreochromis niloticus, sex is determined genetically (GSD), by temperature (TSD) or by temperature/genotype interactions. Functional masculinization can be achieved by applying high rearing temperatures during a critical period of sex differentiation. Estrogens play an important role in female differentiation of non-mammalian vertebrates. The involvement of aromatase, was assesse...
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This paper describes the optimization of dose of methyltestosterone (MT) hormone for masculiniza ti on of ti la pia (Oreoclzromis nilolicus). Five treatments (i.e. T 1> T 2, T 3, T_1 and T 5) with different doses such as 0, 40, 50, 60 and 65 mg of MT hormone were mixed with per kg of feed for each treatment and fed the fry four times a day up Lo satiation for a period of 30 days. The stocking d...
متن کاملStreptococcosis on a red tilapia, Oreochromis sp., farm: a case study.
A commercial red tilapia farm was diagnosed with Streptococcus agalactiae infection using histopathology, microbiology and immunohistochemistry. One hundred fish were randomly taken from different weight/age groups including broodstock, market fish (larger than 150 g), on-growing fish between 20 and 150 g, juveniles and larvae. Fish were clinically examined, anaesthetised and necropsied. Sample...
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ژورنال
عنوان ژورنال: Jurnal Akuakultur Indonesia
سال: 2007
ISSN: 2354-6700,1412-5269
DOI: 10.19027/jai.6.103-108